It:The Living Colossus vs Colossus

Possibly the most ill thought out character to ever exist, the living colossus.
It had no lungs, yet could be drowned or effected by knockout gas.
It had no joints, yet walked around fine.
It was 100ft tall and weighed 1,000 tons but could only lift around 100 tons.

vs

Colossus.

Colossus. And an even easier victory if it's Ultimate Colossus.

no way. Not even Wonder Man (who is far stronger than Colossus or Ultimate Colossus) could take down It alone. He needed Beast to help as a distraction. Poor Petey's screwed here.

the lving colossus had a few appearances. I think it was in an issue of FF back in the day too.